For IBJJF competitions, you are not allowed to wear headgear or any other protection device that contains hard material. However, females are allowed to wear head coverings that cover their hair, ears, and neck leaving only their face exposed (like a wetsuit hood).
Nation Athletic rash guards are some of the best rash guards around. Even though they come at a more premium price, their fit, designs, and comfort are worth it for the avid bjj player.
XMartial rash guards standout with their unique designs and are pretty similar in quality to other premium rash guard brands.
Sanabul rash guards are the best quality rash guards among the more affordable rash guard brands.
Brazilian jiu jitsu classes are split into two types: gi and no gi. For gi classes you wear a gi which is a heavy cotton jacket with drawstring pants and colored belt representing your rank. For no gi classes you wear a rashguard and athletic shorts.
Yes, you can put your rashguard in the dryer. However, it may reduce elasticity of the material over time. If you are concerned with damage we recommend putting it on a low heat cycle. Additionally, you should always check the manufacturer’s instructions to confirm.
For men, no, you do not wear anything underneath your rash guard for jiu jitsu. For women, generally, they wear a sport bra underneath their rashguard.
Rashguards are specifically made for bjj training with added features like a reinforced neckline, aerated fabrics, flatlock stitching, sublimated graphics, waistband liner (to keep it from riding up), and generally, are made of thicker, more durable material.
Compression shirts are often thinner and overall just less durable, but do come at a more affordable price. However, yes, you can still train jiu jitsu in a compression shirt.
For Brazilian jiu jitsu, your rashguard should fit snug to your body around your chest, shoulders, and arms with a little more space in your midsection. It should be tight enough to not get int the way of training but not too tight where it limits your movement, breathing, or bloodflow.
A good rule of thumb for understanding the IBJJF rashguard requirements is that your rashguard should have a base color of white or black or black and white and then have at least 10% of it include your belt rank color. It can also be entirely made up of your rank color.